Rev 699 | Rev 756 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 684 | jermar | 1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 13 | * documentation and/or other materials provided with the distribution. |
||
| 14 | * - The name of the author may not be used to endorse or promote products |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
||
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
||
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
||
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
||
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 29 | /* |
||
| 30 | * This is the generic page hash table interface. |
||
| 699 | jermar | 31 | * Architectures that use single page hash table for |
| 32 | * storing page translations must implement it. |
||
| 684 | jermar | 33 | */ |
| 34 | |||
| 35 | #ifndef __PAGE_HT_H__ |
||
| 36 | #define __PAGE_HT_H__ |
||
| 37 | |||
| 38 | #include <mm/page.h> |
||
| 746 | jermar | 39 | #include <typedefs.h> |
| 684 | jermar | 40 | |
| 746 | jermar | 41 | /** Number of slots in page hash table. */ |
| 42 | #define HT_ENTRIES HT_ENTRIES_ARCH |
||
| 43 | |||
| 699 | jermar | 44 | /** Hash function. |
| 45 | * |
||
| 46 | * @param page Virtual address. Only vpn bits will be used. |
||
| 47 | * @param asid Address space identifier. |
||
| 48 | * |
||
| 49 | * @return Pointer to hash table typed pte_t *. |
||
| 50 | */ |
||
| 51 | #define HT_HASH(page, asid) HT_HASH_ARCH(page, asid) |
||
| 52 | |||
| 53 | /** Compare PTE with page and asid. |
||
| 54 | * |
||
| 55 | * @param page Virtual address. Only vpn bits will be used. |
||
| 56 | * @param asid Address space identifier. |
||
| 57 | * @param t PTE. |
||
| 58 | * |
||
| 59 | * @return 1 on match, 0 otherwise. |
||
| 60 | */ |
||
| 61 | #define HT_COMPARE(page, asid, t) HT_COMPARE_ARCH(page, asid, t) |
||
| 62 | |||
| 746 | jermar | 63 | /** Identify empty page hash table slots. |
| 699 | jermar | 64 | * |
| 65 | * @param t Pointer ro hash table typed pte_t *. |
||
| 66 | * |
||
| 67 | * @return 1 if the slot is empty, 0 otherwise. |
||
| 68 | */ |
||
| 69 | #define HT_SLOT_EMPTY(t) HT_SLOT_EMPTY_ARCH(t) |
||
| 70 | |||
| 746 | jermar | 71 | /** Invalidate/empty page hash table slot. |
| 72 | * |
||
| 73 | * @param t Address of the slot to be invalidated. |
||
| 74 | */ |
||
| 75 | #define HT_INVALIDATE_SLOT(t) HT_INVALIDATE_SLOT_ARCH(t) |
||
| 76 | |||
| 699 | jermar | 77 | /** Return next record in collision chain. |
| 78 | * |
||
| 79 | * @param t PTE. |
||
| 80 | * |
||
| 81 | * @return Successor of PTE or NULL. |
||
| 82 | */ |
||
| 83 | #define HT_GET_NEXT(t) HT_GET_NEXT_ARCH(t) |
||
| 84 | |||
| 85 | /** Set successor in collision chain. |
||
| 86 | * |
||
| 87 | * @param t PTE. |
||
| 88 | * @param s Successor or NULL. |
||
| 89 | */ |
||
| 90 | #define HT_SET_NEXT(t, s) HT_SET_NEXT_ARCH(t, s) |
||
| 91 | |||
| 92 | /** Set page hash table record. |
||
| 93 | * |
||
| 94 | * @param t PTE. |
||
| 95 | * @param page Virtual address. Only vpn bits will be used. |
||
| 96 | * @param asid Address space identifier. |
||
| 97 | * @param frame Physical address. Only pfn bits will be used. |
||
| 98 | * @param flags Flags. See mm/page.h. |
||
| 99 | */ |
||
| 100 | #define HT_SET_RECORD(t, page, asid, frame, flags) HT_SET_RECORD_ARCH(t, page, asid, frame, flags) |
||
| 101 | |||
| 746 | jermar | 102 | |
| 684 | jermar | 103 | extern page_operations_t page_ht_operations; |
| 746 | jermar | 104 | extern spinlock_t page_ht_lock; |
| 684 | jermar | 105 | |
| 746 | jermar | 106 | extern pte_t *page_ht; |
| 107 | |||
| 108 | extern void ht_invalidate_all(void); |
||
| 109 | |||
| 684 | jermar | 110 | #endif |